public class Hello {
    public static void main(String[] args) {
        System.out.println("hello world 中文信息");
        System.out.println(System.getProperty("java.version"));
        System.out.println(System.getProperty("java.home"));

        //13014577033

        //var i = 3; java 10 开始有var关键字
    }
}
